非对称起爆云雾爆轰威力场分布特性研究

Study on Blast Field of FAE by Unsymmetrical Detonation

为获取起爆方式对云雾爆轰威力场的影响,采用TNT装药对抛撒云团进行了非对称单点起爆,通过高速摄影仪及压力传感器获取了云雾爆轰过程及不同距离、方向的超压值,分析了云雾爆轰波传播特性及超压随距离、方向的变化规律。结果表明,采用非对称偏心起爆时,云雾场内超压分布呈现明显的不均匀性,部分区域存在冲击波叠加效应,而随着距离的增大,超压分布逐渐趋于均匀,起爆方式对云雾爆轰威力场的影响主要体现在近场区域。

In order to obtain the influence of initiation mode on power field of cloud detonation, the TNT charge was applied to throwing clouds for asymmetric single point initiation. Through cloud detonation process and overpressure values of different distances and directions got by high speed camera and pressure sensor, the propagation characteristics of cloud detonation wave and the variation law of overpressure with distance and direction were analyzed. The results show that with asymmetric single point initiation, clouds inside overpressure distribu- tion show obvious uneven, part of the region takes on superimposed effect of shock wave, and with increase of the distance, overpressure distribution tends to be uniform, detonating manner on cloud detonation power field effect is mainly reflected in the near field.